EP4149654A1 - Installation et procede de production de biomethane avec perte de methane limitee et emission de co2 limitee - Google Patents
Installation et procede de production de biomethane avec perte de methane limitee et emission de co2 limiteeInfo
- Publication number
- EP4149654A1 EP4149654A1 EP21722891.5A EP21722891A EP4149654A1 EP 4149654 A1 EP4149654 A1 EP 4149654A1 EP 21722891 A EP21722891 A EP 21722891A EP 4149654 A1 EP4149654 A1 EP 4149654A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- permeate
- methane
- distillation column
- separation unit
- gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/225—Multiple stage diffusion
- B01D53/226—Multiple stage diffusion in serial connexion
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/145—One step being separation by permeation
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/148—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step in combination with at least one evaporator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D53/30—Controlling by gas-analysis apparatus
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/005—Processes comprising at least two steps in series
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- C—CHEMISTRY; METALLURGY
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- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
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- C—CHEMISTRY; METALLURGY
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/144—Purification; Separation; Use of additives using membranes, e.g. selective permeation
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
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- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
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- Y02P20/59—Biological synthesis; Biological purification
Definitions
- the present invention relates to an installation for the treatment by membrane permeation of a gas stream containing at least methane and carbon dioxide to produce a gas stream rich in methane and to a process using such an installation.
- It relates in particular to the purification of biogas, with the aim of producing biomethane conforming to specifications for injection into a natural gas network.
- Biogas is the gas produced during the degradation of organic matter in the absence of oxygen (anaerobic fermentation) also called methanization. It can be a matter of natural degradation - we can thus observe it in marshes or household refuse dumps - but the production of biogas can also result from the methanization of waste in a dedicated reactor, called a methanizer or digester.
- Biogas mainly contains methane (CH4) and carbon dioxide (C02) in varying proportions depending on the method of production but also, in smaller proportions, water, nitrogen, hydrogen sulphide, oxygen, as well as other organic compounds, in trace amounts.
- CH4 methane
- C02 carbon dioxide
- the biogas comprises, on dry gas, from SO to 75% of methane, from 15 to 60% of C02, from 0 to 15% of nitrogen, 0 to 5% oxygen and trace compounds.
- Biogas is recovered in different ways. It can, after a light treatment, be upgraded near the production site to provide heat, electricity or a mixture of the two (cogeneration); the high carbon dioxide content reduces its calorific value, increases compression and transport costs and limits the economic value of its recovery to this local use. Further purification of the biogas allows its wider use, in particular, an extensive purification of the biogas makes it possible to obtain a biogas purified to the specifications of natural gas and which can be substituted for it; the biogas thus purified is “biomethane”. Biomethane thus supplements natural gas resources with a renewable part produced in the heart of the territories; it can be used for exactly the same purposes as natural gas of fossil origin. It can supply a natural gas network, a filling station for vehicles, it can also be liquefied to be stored in the form of liquid natural gas (LNG) ...
- LNG liquid natural gas
- the methods of recovering biomethane are determined according to local contexts: local energy needs, possibilities of recovery as biomethane fuel, existence near distribution networks or natural gas transport in particular. Creating synergies between the different actors working in a territory (farmers, industrialists, public authorities), the production of biomethane helps the territories to acquire greater energy autonomy.
- a first step consists in compressing the biogas which has been produced and conveyed at atmospheric pressure, this compression can be obtained - in a conventional manner - via a compressor.
- the following steps aim to rid the biogas of corrosive components such as hydrogen sulphide and volatile organic compounds (VOCs), the technologies used are conventionally pressure modulated adsorption (PSA) and trapping on activated carbon.
- PSA pressure modulated adsorption
- Carbon dioxide is a typical contaminant found in natural gas that it is common to have to get rid of.
- membrane technology is particularly efficient when the CO 2 content is high; it is therefore to separate the C02 present in the biogas, coming from landfill gas or digesters of plant or animal waste.
- the membrane gas separation processes used for the purification of a gas must allow the production of a gas of the required quality, at low cost, while minimizing losses of the gas. gas that we want to upgrade.
- the separation carried out is mainly a CH4 / C02 separation, to allow the production of a gas containing, depending on its use, more than 85% of CH4, preferably more than 95% of CH4, more preferably more than 97.5% of CH4, while minimizing the losses of CH4 in the waste gas and the cost of purification, the latter being for a large part linked to the electrical consumption of the gas compression device upstream of the membranes.
- the installations allowing the production of a gas stream enriched in methane can control the loss of methane.
- a solution of the present invention is an installation for the treatment by membrane permeation of a gas feed stream comprising at least methane and carbon dioxide, said installation comprising: a first membrane separation unit capable of receiving the flow feed gas and providing a first permeate and a first retentate, a second membrane separation unit adapted to receive the first retentate and to provide a second permeate and a second retentate, a compressor for compressing the first permeate to a pressure between 17 bar and 25 bar,
- a distillation column allowing the first cooled permeate to be separated into a gas stream and a liquid stream
- the means for recycling the gas flow leaving the distillation column comprises a set of valves and pipes.
- the installation according to the invention may have one or more of the characteristics below:
- the installation comprises a means for measuring the concentration of methane and / or carbon dioxide in the gas stream leaving the distillation column, a means for comparing the concentration of methane and / or carbon dioxide measured by the measuring means with a target value, and means for adjusting the pressure and / or the temperature of the first permeate as a function of the comparison made by the first comparison means.
- the installation comprises a compressor making it possible to compress the gas feed stream to a pressure of between 8 bar and 16 bar upstream of the first membrane separation unit.
- the installation includes an evaporator making it possible to evaporate the liquid flow leaving the distillation column.
- the installation includes a liquid reservoir for storing the liquid flow leaving the distillation column.
- the installation comprises a means for purifying the gaseous feed stream placed upstream of the first membrane separation unit and making it possible to eliminate at least part of an impurity chosen from water, hydrogen sulphide and compounds. volatile organic.
- the means for cooling the first compressed permeate to a temperature below -40 ° C comprises a set of chiller and heat exchangers.
- a subject of the present invention is also a method for the treatment by membrane permeation of a gas feed stream comprising at least methane and carbon dioxide, said method implementing the installation as defined above and comprising: a) A step of feeding the first membrane separation unit with the feed gas flow so as to produce a first retentate enriched in methane relative to the gas feed flow and a first permeate enriched in carbon dioxide relative to to the gas feed stream, b) A step of supplying the second membrane separation unit with the first retentate so as to produce a second retentate enriched in methane relative to the first retentate and a second permeate enriched in carbon dioxide relative to the first retentate, c) A step of compressing the first permeate at a pressure of between 17 bar and 25 bar, d) A step of cooling the first permeate compressed to a temperature below -40 ° C, e) A step of separating the first permeate cooled into a gas stream and a liquid stream in the distillation column
- the part recycled in the feed gas flow will preferably represent 1/3 of the feed gas flow.
- the method according to the invention may have one or more of the characteristics below:
- the method comprises a step of measuring the concentration of methane and / or carbon dioxide in the gas stream leaving the distillation column, a step of comparing the concentration of methane and / or carbon dioxide measured by the means measurement with a target value, and a step of adjusting the pressure and / or the temperature of the first permeate as a function of the comparison made by the first comparison means.
- the three steps are carried out automatically by means of data transmission and data processing.
- the target value is between 10% of CH4 and 20% of CH4,
- the method comprises a step of compressing the gas feed stream to a pressure of between 8 bar and 16 bar upstream of the first membrane separation unit,
- the method comprises a step of evaporating the liquid stream leaving the distillation column.
- the method comprises a step of storing the liquid stream leaving the distillation column in a liquid tank.
- the method comprises a step of purifying the gas feed stream upstream of the first membrane separation unit so as to at least partially remove an impurity chosen from water, hydrogen sulphide and volatile organic compounds,
- the feed gas stream is biogas.
- the solution proposed here makes it possible here to obtain a flow of biomethane at constant concentration without loss of its main component, methane, but also makes it possible to avoid carbon dioxide emissions.
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- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Engineering & Computer Science (AREA)
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- Mechanical Engineering (AREA)
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- Microbiology (AREA)
- Sustainable Development (AREA)
- Biochemistry (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2004692A FR3110092B1 (fr) | 2020-05-13 | 2020-05-13 | Installation et procédé de production de biométhane avec perte de méthane limitée et émission de CO2 limitée |
| PCT/EP2021/061656 WO2021228616A1 (fr) | 2020-05-13 | 2021-05-04 | Installation et procede de production de biomethane avec perte de methane limitee et emission de co2 limitee |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4149654A1 true EP4149654A1 (fr) | 2023-03-22 |
| EP4149654B1 EP4149654B1 (fr) | 2025-07-02 |
Family
ID=72356088
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21722891.5A Active EP4149654B1 (fr) | 2020-05-13 | 2021-05-04 | Installation et procédé de production de biométhane avec perte de méthane limitée et emission de co2 limitée |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US12667805B2 (fr) |
| EP (1) | EP4149654B1 (fr) |
| CN (1) | CN115551616A (fr) |
| FR (1) | FR3110092B1 (fr) |
| WO (1) | WO2021228616A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3120803A1 (fr) * | 2021-03-22 | 2022-09-23 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Installation pour le traitement par perméation membranaire d’un flux de biogaz avec une unité de séparation membranaire à deux modules |
| FR3157221A1 (fr) * | 2023-12-20 | 2025-06-27 | L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Installation et procédé de production de biométhane gazeux et de CO2 liquide |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4085192A (en) * | 1973-05-11 | 1978-04-18 | Shell Oil Company | Selective removal of hydrogen sulfide from gaseous mixtures |
| US5082534A (en) * | 1990-03-14 | 1992-01-21 | Wayne Technology, Inc. | Pyrolytic conversion system |
| WO2012048078A1 (fr) * | 2010-10-06 | 2012-04-12 | L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude | Procédé d'élimination du dioxyde de carbone |
| BR112015010492B8 (pt) * | 2012-11-14 | 2023-04-25 | Evonik Fibres Gmbh | Aparelhagem para separação de gases, instalação para produção de biogás, e métodos para seu controle |
| WO2014183977A1 (fr) * | 2013-05-15 | 2014-11-20 | Evonik Industries Ag | Commande de la composition de gaz d'une installation de séparation de gaz par des membranes |
| US9108894B1 (en) * | 2014-07-22 | 2015-08-18 | Iogen Corporation | Process for using biogenic carbon dioxide derived from non-fossil organic material |
| JP6231975B2 (ja) * | 2014-12-04 | 2017-11-15 | 三菱重工業株式会社 | 天然ガス精製システム |
| US9889401B2 (en) * | 2015-12-18 | 2018-02-13 | General Electric Company | Flow management and CO2-recovery apparatus and method of use |
| US10118129B2 (en) * | 2017-03-31 | 2018-11-06 | Mitsubishi Heavy Industries, Ltd. | Natural-gas purification apparatus |
| CN107081045A (zh) * | 2017-04-14 | 2017-08-22 | 中国石油化工股份有限公司 | 一种捕集烟气中二氧化碳的方法及其专用设备 |
| US10780392B2 (en) * | 2018-04-23 | 2020-09-22 | Air Liquide Advanced Technologies U.S. Llc | Multi-stage membrane for N2 rejection |
| EP3632525A1 (fr) * | 2018-10-02 | 2020-04-08 | Evonik Fibres GmbH | Dispositif et procédé permettant de séparer le méthane d'un mélange gazeux contenant du méthane, du dioxyde de carbone et du sulfure d'hydrogène |
| CN109771981B (zh) * | 2019-02-02 | 2021-05-18 | 南京工业大学 | 一种节能型精馏-膜法-精馏耦合分离共沸有机溶剂的方法 |
-
2020
- 2020-05-13 FR FR2004692A patent/FR3110092B1/fr active Active
-
2021
- 2021-05-04 US US17/924,559 patent/US12667805B2/en active Active
- 2021-05-04 EP EP21722891.5A patent/EP4149654B1/fr active Active
- 2021-05-04 CN CN202180033856.7A patent/CN115551616A/zh active Pending
- 2021-05-04 WO PCT/EP2021/061656 patent/WO2021228616A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| FR3110092A1 (fr) | 2021-11-19 |
| US20230338889A1 (en) | 2023-10-26 |
| CN115551616A (zh) | 2022-12-30 |
| WO2021228616A1 (fr) | 2021-11-18 |
| US12667805B2 (en) | 2026-06-30 |
| FR3110092B1 (fr) | 2022-08-05 |
| EP4149654B1 (fr) | 2025-07-02 |
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